Does adding skinfold thicknesses to BMI-for-age improve the estimation of body fatness in children and adolescents?
Adding skinfold thickness to BMI improves body fatness estimation in children, but offers little added value for those who are already overweight.
Although skinfold thicknesses, when used in addition to BMI-for-age, can substantially improve the estimation of body fatness, the improvement among overweight children is small.
Freedman et al. (Mon,) studied this question.